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Debt And Related Expenses (Schedule Of Debt Instruments and Balances) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 6,363 |
Net premium (discount) on debentures and notes |  | 149 | $ (20)
Debt issuance costs |  | (30) | (31)
Long-term debt |  | 6,482 | $ 4,298
8.25% due August 1, 2023 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | [1] | $ 242 |
Debt, maturity date |  | Aug. 01, 2023 |
Debt interest rate, stated percentage |  | 8.25% | 8.25%
5.25% due September 15, 2024 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | [1] | $ 472 |
Debt, maturity date |  | Sep. 15, 2024 |
Debt interest rate, stated percentage |  | 5.25% | 5.25%
5.85% due December 15, 2025 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 485 | $ 485
Debt, maturity date |  | Dec. 15, 2025 |
Debt interest rate, stated percentage |  | 5.85% | 5.85%
7.50% due September 15, 2027 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | [2] | $ 73 | $ 73
Debt, maturity date |  | Sep. 15, 2027 |
Debt interest rate, stated percentage |  | 7.50% | 7.50%
5.25% due October 15, 2027 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | [1] | $ 390 |
Debt, maturity date |  | Oct. 15, 2027 |
Debt interest rate, stated percentage |  | 5.25% | 5.25%
5.875% due June 15, 2028 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | [1] | $ 325 |
Debt, maturity date |  | Jun. 15, 2028 |
Debt interest rate, stated percentage |  | 5.875% | 5.875%
4.50% due January 15, 2030 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross | [1] | $ 585 |
Debt, maturity date |  | Jan. 15, 2030 |
Debt interest rate, stated percentage |  | 4.50% | 4.50%
7.875% due September 30, 2031 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 675 | $ 675
Debt, maturity date |  | Sep. 30, 2031 |
Debt interest rate, stated percentage |  | 7.875% | 7.875%
7.95% due April 15, 2032 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 366 | $ 366
Debt, maturity date |  | Apr. 15, 2032 |
Debt interest rate, stated percentage |  | 7.95% | 7.95%
5.60% due July 15, 2041 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 1,250 | $ 1,250
4.75% due May 15, 2042 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | 750 | 750
5.00% due June 15, 2045 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 750 | $ 750
Debt, maturity date |  | Jun. 15, 2045 |
Debt interest rate, stated percentage |  | 5.00% | 5.00%
5.60% due July 15, 2041 |  |  |
Debt Instrument [Line Items] |  |  |
Debt, maturity date |  | Jul. 15, 2041 |
Debt interest rate, stated percentage |  | 5.60% | 5.60%
Four Point Seven Five Percent Due May Fifteenth Two Thousand And Forty Two |  |  |
Debt Instrument [Line Items] |  |  |
Debt, maturity date |  | May 15, 2042 |
Debt interest rate, stated percentage |  | 4.75% | 4.75%
[1] | These instruments were assumed by Devon in January 2021 in conjunction with the Merger. Subsequent to debt retirements and the obligor exchange transaction completed during 2021, approximately $51 million of these instruments remain the unsecured and unsubordinated obligation of WPX, a wholly-owned subsidiary of Devon.
[2] | This instrument was assumed by Devon in April 2003 in conjunction with the merger with Ocean Energy. The fair value and effective rate of this note at the time assumed was $169 million and 6.5%, respectively. This instrument is the unsecured and unsubordinated obligation of Devon OEI Operating, L.L.C. and is guaranteed by Devon Energy Production Company, L.P. Each of these entities is a wholly-owned subsidiary of Devon

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